Comedian Roseanne Barr has apologised for tweeting a “bad joke” comparing ex-Obama adviser Valerie Jarrett, who is African American, to an ape.
She sparked online backlash after she called Mrs Jarrett the child of the Islamist group the Muslim Brotherhood and the Planet of the Apes film.
She later tweeted an apology after Twitter users criticised her and the ABC TV network, which airs her show.
Mrs Jarrett was born in Iran to American parents.
“I apologise to Valerie Jarrett and to all Americans,” she wrote, after several follow-up posts defending her racially-charged “joke”.
“I am truly sorry for making a bad joke about her politics and her looks. I should have known better. Forgive me-my joke was in bad taste.”
She also wrote that she was “now leaving Twitter”, but it was unclear if that meant whether she would disable her account.
ABC executives have yet to comment on her statements.
Earlier on Tuesday, she tweeted an apology to Chelsea Clinton – the daughter of former US President Bill Clinton and Hillary Clinton – after claiming she was married to a relative of billionaire investor George Soros.
“Sorry to have tweeted incorrect info about you! Please forgive me,” she wrote to Chelsea Clinton.
On Sunday, the 65-year-old comedian also criticised the Obama family for signing on with Netflix to produce TV programmes and movies.
“I don’t think any President should go from WH to producing big media 4 public consumption.”
“It’s an unholy alliance. Leave show biz 2 professionals,” she wrote, adding that “going from show biz 2 WH is OK”.
She also implied that she was considering a presidential run someday in the future.
Roseanne’s reboot of her popular comedy series has sparked controversy as well as strong ratings, after it was revealed that she portrays a supporter of US President Donald Trump.